As I'm migrating my site to a new server, my postfix/dovecot setup is currently on the new server, while nginx (and squirrelmail) is on the old.
Since I can't use localhost:25 for smtp in Squirrel (since it's on another server) I need to make sure I have postfix and SM correctly configured for secure smtp. Googled and found various articles of varying ages. Would appreciate a pointer to the most recent reference on making sure SM and postfix talk to each other securely. Also, I'd like to futureprooof my code. Currently I only have one web frontend (and it'll all be on the same machine when I migrate) but if I have multiple frontends in the future is it correct to say you don't want php apps on each frontend that might send mail sending out independently, but rather connecting to the mail server and sending out through there? Thanks for any tips.
